java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:12:54,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:12:54,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:12:54,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:12:54,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:12:54,750 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:12:54,751 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:12:54,753 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:12:54,755 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:12:54,756 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:12:54,757 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:12:54,757 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:12:54,758 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:12:54,759 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:12:54,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:12:54,761 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:12:54,762 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:12:54,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:12:54,766 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:12:54,768 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:12:54,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:12:54,770 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:12:54,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:12:54,795 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 02:12:54,825 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:12:54,827 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:12:54,828 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:12:54,829 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:12:54,829 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:12:54,829 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:12:54,829 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:12:54,830 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:12:54,830 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:12:54,830 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:12:54,830 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:12:54,830 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:12:54,831 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:12:54,832 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:12:54,832 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:12:54,832 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:12:54,832 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:12:54,832 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:12:54,833 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:12:54,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:12:54,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:12:54,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:12:54,833 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:12:54,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:12:54,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:12:54,836 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:12:54,836 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:12:54,837 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:12:54,837 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:12:54,837 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:12:54,837 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:12:54,837 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:12:54,837 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:12:54,838 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:12:54,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:12:54,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:12:54,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:12:54,915 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:12:54,916 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:12:54,917 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-10-24 02:12:54,989 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba375a64e/594a611c9e434274962e1da5ce687c31/FLAGb66399c2c [2018-10-24 02:12:55,708 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:12:55,709 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-10-24 02:12:55,734 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba375a64e/594a611c9e434274962e1da5ce687c31/FLAGb66399c2c [2018-10-24 02:12:55,751 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba375a64e/594a611c9e434274962e1da5ce687c31 [2018-10-24 02:12:55,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:12:55,766 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:12:55,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:12:55,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:12:55,773 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:12:55,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:12:55" (1/1) ... [2018-10-24 02:12:55,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d47c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:55, skipping insertion in model container [2018-10-24 02:12:55,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:12:55" (1/1) ... [2018-10-24 02:12:55,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:12:55,944 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:12:57,031 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:12:57,036 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:12:57,506 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:12:57,536 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:12:57,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57 WrapperNode [2018-10-24 02:12:57,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:12:57,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:12:57,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:12:57,539 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:12:57,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:57,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:57,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:12:57,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:12:57,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:12:57,988 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:12:58,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:58,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:58,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:58,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:58,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:58,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:58,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... [2018-10-24 02:12:58,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:12:58,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:12:58,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:12:58,275 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:12:58,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:12:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:12:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:12:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:12:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:12:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:12:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:12:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:12:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:12:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:12:58,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:12:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:12:58,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:13:06,997 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:13:06,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:13:06 BoogieIcfgContainer [2018-10-24 02:13:06,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:13:07,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:13:07,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:13:07,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:13:07,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:12:55" (1/3) ... [2018-10-24 02:13:07,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dad626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:13:07, skipping insertion in model container [2018-10-24 02:13:07,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:57" (2/3) ... [2018-10-24 02:13:07,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dad626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:13:07, skipping insertion in model container [2018-10-24 02:13:07,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:13:06" (3/3) ... [2018-10-24 02:13:07,008 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label18_true-unreach-call.c [2018-10-24 02:13:07,019 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:13:07,029 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:13:07,049 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:13:07,104 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:13:07,105 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:13:07,105 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:13:07,105 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:13:07,105 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:13:07,105 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:13:07,106 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:13:07,106 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:13:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 02:13:07,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-24 02:13:07,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:07,174 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:13:07,176 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:07,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:07,183 INFO L82 PathProgramCache]: Analyzing trace with hash -502294996, now seen corresponding path program 1 times [2018-10-24 02:13:07,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:07,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:07,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:07,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:07,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:07,760 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:13:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:13:07,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:13:07,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:13:07,841 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:13:07,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:13:07,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:13:07,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:13:07,868 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 02:13:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:13:14,774 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 02:13:14,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:13:14,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-10-24 02:13:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:13:14,815 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 02:13:14,815 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 02:13:14,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:13:14,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 02:13:15,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 02:13:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 02:13:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 02:13:15,018 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 64 [2018-10-24 02:13:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:13:15,019 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 02:13:15,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:13:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 02:13:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 02:13:15,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:15,037 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:13:15,038 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:15,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:15,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1983682478, now seen corresponding path program 1 times [2018-10-24 02:13:15,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:15,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:15,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:15,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:15,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:13:15,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:13:15,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:13:15,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:13:15,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:13:15,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:13:15,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:13:15,607 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 02:13:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:13:24,532 INFO L93 Difference]: Finished difference Result 4416 states and 8482 transitions. [2018-10-24 02:13:24,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:13:24,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-24 02:13:24,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:13:24,554 INFO L225 Difference]: With dead ends: 4416 [2018-10-24 02:13:24,554 INFO L226 Difference]: Without dead ends: 2948 [2018-10-24 02:13:24,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:13:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-10-24 02:13:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2922. [2018-10-24 02:13:24,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-10-24 02:13:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5419 transitions. [2018-10-24 02:13:24,657 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5419 transitions. Word has length 154 [2018-10-24 02:13:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:13:24,658 INFO L481 AbstractCegarLoop]: Abstraction has 2922 states and 5419 transitions. [2018-10-24 02:13:24,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:13:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5419 transitions. [2018-10-24 02:13:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 02:13:24,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:24,664 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:13:24,665 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:24,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash 119738927, now seen corresponding path program 1 times [2018-10-24 02:13:24,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:24,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:24,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:24,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:24,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:13:24,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:13:24,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:13:24,882 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:13:24,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:13:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:13:24,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:13:24,884 INFO L87 Difference]: Start difference. First operand 2922 states and 5419 transitions. Second operand 6 states. [2018-10-24 02:13:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:13:37,235 INFO L93 Difference]: Finished difference Result 11796 states and 22934 transitions. [2018-10-24 02:13:37,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 02:13:37,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-24 02:13:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:13:37,302 INFO L225 Difference]: With dead ends: 11796 [2018-10-24 02:13:37,302 INFO L226 Difference]: Without dead ends: 8880 [2018-10-24 02:13:37,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 02:13:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2018-10-24 02:13:37,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8810. [2018-10-24 02:13:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8810 states. [2018-10-24 02:13:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 14107 transitions. [2018-10-24 02:13:37,619 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 14107 transitions. Word has length 155 [2018-10-24 02:13:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:13:37,620 INFO L481 AbstractCegarLoop]: Abstraction has 8810 states and 14107 transitions. [2018-10-24 02:13:37,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:13:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 14107 transitions. [2018-10-24 02:13:37,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-24 02:13:37,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:37,629 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:13:37,629 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:37,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:37,630 INFO L82 PathProgramCache]: Analyzing trace with hash -720272287, now seen corresponding path program 1 times [2018-10-24 02:13:37,630 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:37,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:37,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:37,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:37,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:37,949 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:13:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 114 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:13:38,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:13:38,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:13:38,194 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-10-24 02:13:38,199 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2035], [2037], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:13:38,276 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:13:38,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:13:40,610 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:13:40,611 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 02:13:40,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:40,655 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:13:42,706 INFO L232 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 78.33% of their original sizes. [2018-10-24 02:13:42,706 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:13:43,093 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:13:43,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:13:43,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 02:13:43,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:13:43,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:13:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:13:43,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:13:43,101 INFO L87 Difference]: Start difference. First operand 8810 states and 14107 transitions. Second operand 7 states. [2018-10-24 02:13:45,935 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:14:26,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:14:26,044 INFO L93 Difference]: Finished difference Result 18319 states and 29116 transitions. [2018-10-24 02:14:26,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:14:26,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2018-10-24 02:14:26,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:14:26,091 INFO L225 Difference]: With dead ends: 18319 [2018-10-24 02:14:26,092 INFO L226 Difference]: Without dead ends: 9515 [2018-10-24 02:14:26,120 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:14:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2018-10-24 02:14:26,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 9513. [2018-10-24 02:14:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9513 states. [2018-10-24 02:14:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 14819 transitions. [2018-10-24 02:14:26,345 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 14819 transitions. Word has length 225 [2018-10-24 02:14:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:14:26,346 INFO L481 AbstractCegarLoop]: Abstraction has 9513 states and 14819 transitions. [2018-10-24 02:14:26,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 02:14:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 14819 transitions. [2018-10-24 02:14:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-24 02:14:26,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:14:26,362 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:14:26,362 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:14:26,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:14:26,363 INFO L82 PathProgramCache]: Analyzing trace with hash -572310658, now seen corresponding path program 1 times [2018-10-24 02:14:26,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:14:26,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:26,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:14:26,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:26,364 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:14:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:14:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 230 proven. 167 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:14:27,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:14:27,076 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:14:27,076 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-10-24 02:14:27,077 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2035], [2037], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:14:27,087 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:14:27,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:14:40,476 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:14:40,476 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 02:14:40,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:14:40,484 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:14:44,613 INFO L232 lantSequenceWeakener]: Weakened 289 states. On average, predicates are now at 77.7% of their original sizes. [2018-10-24 02:14:44,613 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:15:31,181 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:15:31,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:15:31,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 29 [2018-10-24 02:15:31,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:15:31,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 02:15:31,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 02:15:31,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-24 02:15:31,183 INFO L87 Difference]: Start difference. First operand 9513 states and 14819 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 02:16:50,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 02:16:50,811 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:16:50,818 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:16:50,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:16:50 BoogieIcfgContainer [2018-10-24 02:16:50,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:16:50,820 INFO L168 Benchmark]: Toolchain (without parser) took 235055.52 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 965.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:50,821 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:16:50,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1770.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:50,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 448.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -926.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:50,825 INFO L168 Benchmark]: Boogie Preprocessor took 286.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:50,826 INFO L168 Benchmark]: RCFGBuilder took 8724.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 498.9 MB). Peak memory consumption was 498.9 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:50,827 INFO L168 Benchmark]: TraceAbstraction took 223819.62 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 480.6 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:50,835 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1770.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 448.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -926.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8724.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 498.9 MB). Peak memory consumption was 498.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223819.62 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 480.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 180]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 180). Cancelled while BasicCegarLoop was constructing difference of abstraction (9513states) and FLOYD_HOARE automaton (currently 15 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (614 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 223.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 151.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1175 SDtfs, 9614 SDslu, 519 SDs, 0 SdLazy, 14968 SolverSat, 4438 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 667 GetRequests, 535 SyntacticMatches, 87 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 48.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9513occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961514321579368 AbsIntWeakeningRatio, 0.09133858267716535 AbsIntAvgWeakeningVarsNumRemoved, 331.3748031496063 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 98 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 1010 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1005 ConstructedInterpolants, 0 QuantifiedInterpolants, 1478553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 468/700 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown